WO2022183755A1

WO2022183755A1 - Flexible track welding trolley

Info

Publication number: WO2022183755A1
Application number: PCT/CN2021/127738
Authority: WO
Inventors: 肖逸; 袁莉; 李云峰; 李宁; 尹厚云; 宋国粹; 刘群林
Original assignee: 中国化学工程第六建设有限公司; 长春工业大学
Priority date: 2021-03-01
Filing date: 2021-10-29
Publication date: 2022-09-09
Also published as: CN113102930A

Abstract

A flexible track welding trolley used for a circular tube to be welded, the flexible track welding trolley comprising a sprocket and chain assembly, a rolling assembly and a welding gun assembly. In the sprocket and chain assembly, a sprocket (13) is fixed to a shaft A (17); one end of the shaft A (17) passes through a bearing and into a bearing pedestal A (11), the bearing pedestal A (11) is fixed to an internally threaded shaft A (9), the internally threaded shaft A (9) passes through a linear bearing A (7), a spring A (5) and a pressure bearing A (3), which is then connected to a screw rod of a hand-tight bolt A (1), and the linear bearing A (7) is fixed to a flat plate (18); the other end of the shaft A (17) passes through a bearing and into a bearing pedestal B (12), the bearing pedestal B (12) is fixed to an internally threaded shaft B (10), the internally threaded shaft B (10) passes through a linear bearing B (8), a spring B (6) and a pressure bearing B (4), which is then connected to a screw rod of a hand-tight bolt B (2), and the linear bearing B (8) is fixed to the flat plate (18); and a driving device A drives the shaft A (17) to rotate, a chain (33) surrounds the sprocket (13) and the circular tube (32), and the chain (33) meshes with the sprocket (13). The flexible track welding trolley solves the problem of a conventional magnetic welding trolley being unsuitable for welding with a circumferential weld for a non-ferromagnetic circular tube, and can be widely used for welding with a circumferential weld for circular tubes of various materials and various diameters.

Description

Flexible track welding trolley

technical field

The invention relates to the field of welding equipment. More specifically, the present invention relates to a flexible rail welding trolley.

Background technique

When the steel pipe can be rotated, the welding machine can be used to perform the girth weld welding. During the welding process, the welded circular pipe is rotated, and the welding torch does not need to rotate around the circular pipe. However, when the circular pipe cannot be rotated, such as girth welding during the on-site pipeline laying process, the welding trolley needs to drive the welding torch to detour along the axis of the circular pipe to realize circular pipe girth welding. Magnetic welding trolley, with the help of the magnetic field force of the magnet on the body of the magnetic welding trolley or the magnetic wheel, the welding trolley is adsorbed on the surface of the steel pipe and runs around to realize the steel pipe girth weld welding. It cannot be directly adsorbed on the surface of the round tube. Usually, the ferromagnetic steel plate track is wound around the outer surface of the round tube, and the magnetic welding trolley is adsorbed on the ferromagnetic steel plate track for non-ferromagnetic round tube girth welding. However, the ferromagnetic steel plate track has limitations such as high rigidity and difficult to bend, poor flexibility, not closely fitting with the round tube, and different tube diameters need to be made with different radians. The practical application is poor, especially for the small diameter Non-ferromagnetic circular tube ferromagnetic steel sheet rails cannot be used.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a flexible orbital welding trolley, which can realize the circumvention of the welding trolley on the surface of the circular pipe, and the welding torch fixed on the welding trolley can realize the welding of the circular pipe girth weld.

In order to achieve these objects and other advantages according to the present invention, there is provided a flexible orbital welding trolley for round pipes to be welded, comprising:

Sprocket chain assembly, including: chain, sprocket, shaft A, bearing seat A, female threaded shaft A, linear bearing A, spring A, pressure bearing A, hand screw A, flat plate, bearing seat B, female threaded shaft B , Linear bearing B, spring B, pressure bearing B, hand screw B, driving device A; the sprocket is fixed on the shaft A, one end of the shaft A penetrates into the bearing seat A through the bearing, and the bearing seat A is fixed on the Internal threaded shaft A, the internal threaded shaft A is connected with the screw of the hand screw A through the linear bearing A, the spring A, the pressure bearing A, the linear bearing A is fixed on the flat plate, and the other end of the shaft A passes through the bearing Insert into the bearing seat B, the bearing seat B is fixed on the inner threaded shaft B, the inner threaded shaft B passes through the linear bearing, the spring B, the pressure bearing B and the screw of the hand-tightening bolt B, and the linear bearing B is fixed on the flat plate , the drive device A drives the shaft A to rotate, the chain wraps the sprocket and the round tube, and the chain meshes with the sprocket;

Rolling components, including: roller A, support plate A, roller B, support plate B, roller C, roller D, support plate C, slider A, helical gear, slide rail A, motor B, fixing part A and helical gear teeth The axis of the roller A is fixed to the support plate A, the support plate is fixed to the flat plate, the axis of the roller B is fixed to the support plate B, the support plate B is fixed to the flat plate, the axis of the roller C, the axis of the roller D Fixed on the support plate C, the support plate C is fixed on the flat plate, the slider A is fixed on the flat plate, the helical rack is fixed on the slide rail A, the motor B is fixed on the fixing piece A, and the fixing piece A is fixed On the flat plate, the helical gear is fixed on the output shaft of the motor B, and the helical gear meshes with the helical rack and pinion for transmission;

The welding torch assembly includes: a welding torch, a fixing fixture, a slider C, an electric translation stage and a fixing piece B; the fixing fixture clamps the welding torch, the fixing fixture is fixed on the sliding block C, and the electric translation stage is fixed on the fixing piece B .

Preferably, the driving device includes: a motor A, a bevel gear A and a bevel gear B;

The motor A is fixed on the bearing seat B, the bevel gear A is fixed on the output shaft of the motor A, the bevel gear B is fixed on the shaft A, and the bevel gear A and the bevel gear B are meshed for transmission.

Preferably, it also includes a welding torch inclination adjustment device, which includes: a slider B, a motor C, a gear, an arc-shaped rack, a fixing piece, and an arc-shaped slide rail;

The fixing member B is fixed to the slider B and the motor C, the gear is fixed to the output shaft of the motor C, the gear is meshed with the arc-shaped rack for transmission, the arc-shaped rack is fixed to the fixing member, and the arc-shaped rack is fixed to the fixing member. The slide rail is fixed on the fixed piece, the slider B works on the arc-shaped slide rail, and the fixed piece is fixed on the slide rail.

Preferably, the motor A and the motor B are both planetary deceleration stepper motors.

Preferably, the motor C is a worm gear reduction stepping motor.

Preferably, the support plate A, the support plate B, the support plate C and the flat plate are fixed together by bolts to form the body of the welded trolley.

The invention includes at least the following beneficial effects: the flexible orbital welding trolley of the present application wraps the circular pipe and the sprocket in the welding trolley together through a chain, flexibly increases or decreases the number of chain links according to different pipe diameters, and adjusts the chain through an elastic tensioning device The frictional force with the round tube enables the welding trolley to circle around the surface of the round tube. The welding torch fixed on the welding trolley can realize the welding of the circular tube girth weld. The flexible orbital welding trolley can be widely used in various materials, various Diameter circular pipe girth welding solves the problem that conventional magnetic welding trolleys are not suitable for non-ferromagnetic circular pipe girth welding.

Other advantages, objects, and features of the present invention will appear in part from the description that follows, and in part will be appreciated by those skilled in the art from the study and practice of the invention.

Description of drawings

Fig. 1 is the overall structure front view of the present invention;

Fig. 2 is the left side view of the overall structure of the present invention;

3 is a front view of the transmission structure of the sprocket, spring A, spring B, hand screw bolt A, hand screw bolt B, planetary deceleration stepper motor, bevel gear A, and bevel gear B of the present invention;

4 is a right side view of the transmission structure of the sprocket, spring A, spring B, hand screw bolt A, hand screw bolt B, planetary deceleration stepper motor, bevel gear A, and bevel gear B of the present invention;

Fig. 5 is the left side view of the welding trolley flat plate, support plate C, roller C, roller D, and lateral movement structure of the welding torch of the present invention;

6 is a right side view of the welding trolley flat plate, roller A, support plate A, roller B, support plate B, and welding torch lateral movement structure of the present invention;

Fig. 7 is the front view of the chain, round pipe and sprocket structure of the present invention;

Fig. 8 is the left side view of the chain, round pipe and sprocket structure of the present invention;

FIG. 9 is a front view of an arc-shaped rack and an arc-shaped slide rail fixing member of the present invention;

Fig. 10 is the left side view of the arc-shaped rack and arc-shaped slide rail fixing member of the present invention;

11 is a front view of the fixing member B of the present invention;

Figure 12 is a left side view of the fixing member B of the present invention;

Fig. 13 is the front view of the welding torch, the fixing fixture and the electric translation stage of the present invention;

Fig. 14 is a left side view of the welding torch, fixing fixture and electric translation stage of the present invention.

In the figure: 1. Hand screw A; 2. Hand screw B; 3. Pressure bearing A; 4. Pressure bearing B; 5. Spring A; 6. Spring B; 7. Linear bearing A; 8. Linear bearing B ;9, Internal thread shaft A; 10, Internal thread shaft B; 11 Bearing seat A; 12, Bearing seat B; 13, Sprocket; 14, Planetary reduction stepping motor A; B; 17, shaft; 18, flat plate; 19, support plate A; 20, support plate B; 21, support plate C; 22, roller A; 23, roller B; 24, roller C; 25, roller D; 26, Slider A; 27, slide rail; 28, helical rack and pinion; 29, helical gear; 30, fixing part A; 31, planetary reduction stepper motor B; 32, round tube; 33, chain; 34, fixing part B 35. Arc-shaped rack; 36. Gear; 37. Arc-shaped slide rail; 38. Slider B; 39. Stepper motor with worm gear reduction; 40. Fixture C; C; 43. Fixing fixture; 44. Welding gun.

Detailed ways

The present invention will be further described in detail below with reference to the embodiments, so that those skilled in the art can implement according to the description.

It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials can be obtained from commercial sources unless otherwise specified; in the description of the present invention, The terms "landscape", "portrait", "top", "bottom", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", The orientation or positional relationship indicated by "inside" and "outside" is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the indicated device or element must have The particular orientation, construction and operation in the particular orientation are therefore not to be construed as limitations of the invention.

As shown in Figure 1, the present invention provides a flexible orbital welding trolley, which is used for round pipes to be welded, including:

Sprocket chain assembly, including: chain (33), sprocket (13), shaft A (17), bearing seat A (11), internal thread shaft A (9), linear bearing A (7), spring A (5 ), pressure bearing A(3), hand screw A(1), flat plate (18), bearing seat B(12), female threaded shaft B(10), linear bearing B(8), spring B(6), Pressure bearing B(4), hand-tightening bolt B(2), driving device A; the sprocket (13) is fixed on the shaft A(17), and one end of the shaft A(17) penetrates the bearing seat A( 11), the bearing seat A(11) is fixed on the female threaded shaft A(9), and the female threaded shaft A(9) passes through the linear bearing A(7), the spring A(5), the pressure bearing A(3) ) is connected with the screw rod of the hand-tightening bolt A (1), the linear bearing A (7) is fixed on the flat plate (18), the other end of the shaft A (17) penetrates into the bearing seat B (12) through the bearing, and the bearing The seat B(12) is fixed on the female threaded shaft B(10), and the female threaded shaft B(10) passes through the linear bearing (8), the spring B(6), the pressure bearing B(4) and the hand screw B( 2) screw connection, the linear bearing B (8) is fixed on the flat plate (18), the drive device A drives the shaft A (17) to rotate, and the chain (33) connects the sprocket (13) and the round tube (32) It is wrapped around, and the chain (33) is meshed with the sprocket (13), so that the welding trolley can go around the surface of the round pipe (32), and the number of chain links can be increased or decreased flexibly according to the diameter of the pipe, which is widely used in various materials, various Diameter circular pipe girth welds.

Rolling assembly, including: roller A (22), support plate A (19), roller B (23), support plate B (20), roller C (24), roller D (25), support plate C (21), Slider A (26), helical gear (29), slide rail A (27), motor B (31), fixing member A (30) and helical rack (28); the shaft of the roller A (22) is fixed on the supporting plate A (19), the supporting plate (19) is fixed on the flat plate (18), the axis of the roller B (23) is fixed on the supporting plate B (20), and the supporting plate B (20) is fixed on the flat plate (18) ), the axis of the roller C (24) and the axis of the roller D (25) are fixed to the support plate C (21), the support plate C (21) is fixed to the flat plate (18), and the slider A (26) is fixed For the flat plate (18), the helical rack (28) is fixed on the slide rail A (27), the motor B (31) is fixed on the fixing member A (30), and the fixing member A (30) is fixed on the The flat plate (18), the helical gear (29) is fixed on the output shaft of the motor B (31), and the helical gear (29) meshes with the helical rack (28) for transmission; the motor B (31) passes through the output shaft The helical gear (29) on the upper drive drives the helical rack (28) fixed on the slide rail (27) to move, on the one hand, the fixing member B (34) and the arc-shaped rack can be adjusted fixed on the slide rail (27). (35), gear (36), arc slide rail (37), slider B (38), worm gear stepper motor (39), fixing part C (40), electric translation stage (41), slider C (42), the fixed fixture (43), and the welding torch (44) move, and the reciprocating translation swing can also be realized for swing arc welding.

A welding torch assembly, comprising: a welding torch (44), a fixing fixture (43), a slider C (42), an electric translation stage (41) and a fixing part B (40); the fixing fixture (43) clamps the welding torch (44) , the fixing fixture (43) is fixed to the slider C (42), the electric translation stage (41) is fixed to the fixing member B (40), and the surface of the welding torch (44) and the round tube (32) is adjusted by the electric translation stage the distance.

In the above technical solution, through the hand screw A (1), the hand screw B (2), the pressure bearing A (3), the pressure bearing B (4), the spring A (5), the spring B (6 ), linear bearing A(7), linear bearing B(8), female threaded shaft A(9), female threaded shaft B(10), bearing seat A(11), bearing seat B(12), adjusting sprocket(13) ) relative to the height of the round tube, so as to adjust the tension force of the chain (33), tighten the chain (33) between the sprocket (13) and the round tube (32), between the chain (33) and the round tube (32) The outer surface generates enough friction, and the outer surface of the chain (33) and the round tube (32) does not slide, that is, it can not only adjust the friction force between the chain and the round tube, but also ensure that the welding trolley wraps around the round tube (32). Adaptive round tube ovality changes at runtime. The roller A (22), the roller B (23), the roller C (24), and the roller D (25) roll on the outer surface of the circular tube.

In a preferred embodiment of the flexible track welding trolley of the present application, the driving device includes: a motor A (14), a bevel gear A (15) and a bevel gear B (16);

The motor A (14) is fixed to the bearing seat B (12), the bevel gear A (15) is fixed to the output shaft of the motor A (14), the bevel gear B (16) is fixed to the shaft A (17), and the bevel gear B (16) is fixed to the shaft A (17). The bevel gear A (15) meshes with the bevel gear B (16) for transmission.

In the above technical solution, the motor A (14) drives the motor fixed on the shaft A (17) through the bevel gear A (15) on the output shaft and the bevel gear B (16) fixed on the shaft A (17). The sprocket (13) rotates, and the sprocket (13) rotates within the chain (33) which wraps the sprocket (13) and the round tube (32).

In a preferred embodiment of the flexible orbital welding trolley of the present application, it further includes a welding torch inclination adjustment device, which includes: a slider B (38), a motor C (39), a gear (36), an arc-shaped rack (35), a fixing piece (34), an arc-shaped slide rail (37);

The fixing member B (40) is fixed to the slider B (38) and the motor C (39), the gear (36) is fixed to the output shaft of the motor C (39), and the gear (36) is connected to the arc-shaped rack. (35) Meshing transmission, the arc-shaped rack (35) is fixed to the fixing member (34), the arc-shaped sliding rail (37) is fixed to the fixing member (34), and the slider B (38) works in An arc-shaped slide rail (37), and the fixing member (34) is fixed on the slide rail (27).

In the above technical solution, the arc-shaped rack (35) and the arc-shaped slide rail (37) are fixed to the fixing member B (34), and the worm gear stepper motor (39) passes through the output shaft. The gear (36) rotates to drive the worm gear stepper motor (39) and the slider B (38) fixed on the fixing member C (40) to move along the arc-shaped slide rail (37), so as to realize the fixed The electric translation table (41), the slider C (42), the fixing fixture (43), and the welding torch (44) on the component C (40) rotate around the center of the arc-shaped slide rail (37), that is, the inclination of the welding torch (44) is realized. adjust.

In a preferred embodiment of the flexible orbital welding trolley of the present application, the motor A (14) and the motor B (31) are both planetary deceleration stepping motors.

In a preferred embodiment of the flexible orbital welding trolley of the present application, the motor C ( 39 ) is a worm gear reduction stepping motor.

In a preferred embodiment of the flexible track welding trolley of the present application, the supporting plate A (19), the supporting plate B (20), the supporting plate C (21), and the flat plate (18) are fixed together by bolts to form the welding trolley body.

Although the embodiment of the present invention has been disclosed as above, it is not limited to the application listed in the description and the embodiment, and it can be applied to various fields suitable for the present invention. For those skilled in the art, it can be easily Therefore, the invention is not limited to the specific details and embodiments shown and described herein without departing from the general concept defined by the appended claims and the scope of equivalents.

Claims

A flexible orbital welding trolley for round pipes to be welded, characterized in that it includes:

Sprocket chain assembly, including: chain (33), sprocket (13), shaft A (17), bearing seat A (11), internal thread shaft A (9), linear bearing A (7), spring A (5 ), pressure bearing A(3), hand screw A(1), flat plate (18), bearing seat B(12), female threaded shaft B(10), linear bearing B(8), spring B(6), Pressure bearing B(4), hand-tightening bolt B(2), driving device A; the sprocket (13) is fixed on the shaft A(17), and one end of the shaft A(17) penetrates the bearing seat A( 11), the bearing seat A(11) is fixed on the female threaded shaft A(9), and the female threaded shaft A(9) passes through the linear bearing A(7), the spring A(5), the pressure bearing A(3) ) is connected with the screw rod of the hand-tightening bolt A (1), the linear bearing A (7) is fixed on the flat plate (18), the other end of the shaft A (17) penetrates into the bearing seat B (12) through the bearing, and the bearing The seat B(12) is fixed on the female threaded shaft B(10), and the female threaded shaft B(10) passes through the linear bearing (8), the spring B(6), the pressure bearing B(4) and the hand screw B( 2) screw connection, the linear bearing B (8) is fixed on the flat plate (18), the drive device A drives the shaft A (17) to rotate, and the chain (33) connects the sprocket (13) and the round tube (32) wrap around, and the chain (33) meshes with the sprocket (13);

Rolling assembly, including: roller A (22), support plate A (19), roller B (23), support plate B (20), roller C (24), roller D (25), support plate C (21), Slider A (26), helical gear (29), slide rail A (27), motor B (31), fixing member A (30) and helical rack (28); the shaft of the roller A (22) is fixed on the supporting plate A (19), the supporting plate (19) is fixed on the flat plate (18), the axis of the roller B (23) is fixed on the supporting plate B (20), and the supporting plate B (20) is fixed on the flat plate (18) ), the axis of the roller C (24) and the axis of the roller D (25) are fixed to the support plate C (21), the support plate C (21) is fixed to the flat plate (18), and the slider A (26) is fixed For the flat plate (18), the helical rack (28) is fixed on the slide rail A (27), the motor B (31) is fixed on the fixing member A (30), and the fixing member A (30) is fixed on the a flat plate (18), the helical gear (29) is fixed on the output shaft of the motor B (31), and the helical gear (29) meshes with the helical rack (28) for transmission;

A welding torch assembly, comprising: a welding torch (44), a fixing fixture (43), a slider C (42), an electric translation stage (41) and a fixing part B (40); the fixing fixture (43) clamps the welding torch (44) , the fixing fixture (43) is fixed on the slider C (42), and the electric translation stage (41) is fixed on the fixing member B (40).
The flexible rail welding trolley according to claim 1, wherein the driving device comprises: a motor A (14), a bevel gear A (15) and a bevel gear B (16);

The motor A (14) is fixed to the bearing seat B (12), the bevel gear A (15) is fixed to the output shaft of the motor A (14), the bevel gear B (16) is fixed to the shaft A (17), and the bevel gear B (16) is fixed to the shaft A (17). The bevel gear A (15) meshes with the bevel gear B (16) for transmission.
The flexible orbital welding trolley according to claim 1 or 2, further comprising a welding torch inclination adjustment device, comprising: a slider B (38), a motor C (39), a gear (36), an arc-shaped rack (35), a fixing piece (34), an arc-shaped slide rail (37);

The fixing member B (40) is fixed to the slider B (38) and the motor C (39), the gear (36) is fixed to the output shaft of the motor C (39), and the gear (36) is connected to the arc-shaped rack. (35) Meshing transmission, the arc-shaped rack (35) is fixed to the fixing member (34), the arc-shaped sliding rail (37) is fixed to the fixing member (34), and the slider B (38) works in An arc-shaped slide rail (37), and the fixing member (34) is fixed on the slide rail (27).
The flexible orbital welding trolley according to claim 2, wherein the motor A (14) and the motor B (31) are both planetary deceleration stepping motors.
The flexible orbital welding trolley according to claim 3, characterized in that, the motor C (39) is a worm gear reduction stepping motor.
The flexible track welding trolley according to claim 1, characterized in that, the support plate A (19), the support plate B (20), the support plate C (21), and the flat plate (18) are fixed together by bolts to form welding Car body.